Water heater replacement cost (2026)

Installed replacement in 2026 typically runs about $700–$1,800 for an electric tank, $1,000–$3,000 for a gas tank, and $1,200–$4,500 for a tankless unit — electric at the low end of that range, gas at the high end — with labor making up roughly 30–50% of the total. A straightforward same-location swap is at the low end; relocating the unit, upsizing gas or venting, or bringing old connections up to code pushes it higher. These are typical ranges, not quotes — get two or three local estimates.

A like-for-like tank swap is usually about 2–4 hours once the plumber is on site: pulling and draining the old unit, setting the new one, and remaking the connections. It runs longer if the old connections, venting, or drain pan have to be brought up to code, if the heater moves to a different spot, or if you switch to tankless, which adds gas or electrical work. Where a permit is required, the inspection is normally a separate short visit a day or two afterwards. Labor is roughly 30–50% of the installed cost.

Usually yes. Most US cities and counties require a permit and an inspection for a water heater replacement, because the job touches plumbing, gas or electrical connections, venting, and the T&P safety valve. The rules vary a lot: some states let a homeowner pull an owner-builder permit on their own home, while some cities require a licensed plumber even for a straight swap. A plumber normally pulls the permit as part of the job — it's one reason an installed replacement costs more than the price of the unit on the shelf. Check your local building department for what applies where you live.

A conventional storage-tank water heater lasts about 8–12 years; a tankless unit often lasts around 20 years with maintenance. Once a tank is past about 12 years, spending money on a repair usually isn't worth it — the tank is likely to fail soon anyway. If you don't know the age, look for the manufacture date encoded in the serial number on the unit's label.

It comes down to where it's leaking and how old it is. A leaking connection, drain valve, or relief valve on a heater under about 8 years old is usually worth repairing. Past roughly 8–12 years a storage tank is near the end of its service life, so a repair competes with a replacement you'll need soon anyway. A tank leaking from its body is a replacement regardless of age. The triage tool weighs your leak location against the unit's age to give you a specific repair-or-replace call.

It depends on your policy and on how the leak happened, so check with your insurer rather than assume. The general pattern in standard US homeowner policies is that sudden, accidental water damage — a tank that lets go and floods a room — is usually covered for the damage to floors, walls, and belongings, while the water heater itself is typically excluded, and a slow leak that has been seeping for weeks or a failure blamed on age and wear is commonly denied. Photograph the damage and the unit before anything is removed. If the tank is still inside its 6–12-year manufacturer warranty, ask about that separately — it may cover a replacement tank even though it won't cover the labor. This is general information, not insurance advice.

No. A tankless unit has no storage tank to corrode, so water at its base usually comes from a loose fitting, the pressure-relief valve, or the condensate drain — those are repairs. Less often it's a cracked internal heat exchanger, which normally means replacing the unit. Because you can't tell which from the outside, shut off the water and gas or power and have a pro diagnose it before running it again.